Crystal resonator for bio-sensor



FIG. 1 is a front view of a crystal resonator for a bio-sensor of a new design;

FIG. 2 is a back view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a referential perspective drawing showing transparent portions of the bio-sensor. 

The ornamental design for a crystal resonator for a bio-sensor, as shown and described. 